US20070229363A1 - Antenna device - Google Patents
Antenna device Download PDFInfo
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- US20070229363A1 US20070229363A1 US11/585,902 US58590206A US2007229363A1 US 20070229363 A1 US20070229363 A1 US 20070229363A1 US 58590206 A US58590206 A US 58590206A US 2007229363 A1 US2007229363 A1 US 2007229363A1
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- dielectric
- antenna
- antenna part
- antenna device
- directivity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/06—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens
- H01Q19/09—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using refracting or diffracting devices, e.g. lens wherein the primary active element is coated with or embedded in a dielectric or magnetic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/40—Element having extended radiating surface
Definitions
- the present invention relates generally to antenna devices, and more particularly to a directional antenna device.
- UWB is a communication method of communicating pulse signals in an ultra-wide band. Therefore, UWB requires an antenna having a structure with which signals can be transmitted and received in an ultra-wide band.
- Non-patent literature 1 There is a proposed antenna including a bottom board and a power feeding body, to be used in the frequency band of at least 3.1 GHz through 10.6 GHz, authorized by the FCC (Non-patent literature 1).
- Non-patent literature 1 An Omnidirectional and Low-VSWR Antenna for the FCC-Approved UWB Frequency Band, written and proposed by Takuya Taniguchi and Takehiko Kobayashi of Tokyo Denki University, at 2003 IEICE (The Institute of Electronics, Information and Communication Engineers) General Conference, B-1-133, on Mar. 22, 2003, at Tohoku University, Kawauchi Campus, classroom B201
- the present invention provides an antenna device in which one or more of the above-described disadvantages is eliminated.
- a preferred embodiment of the present invention provides an antenna device that can improve directivity with a simple structure.
- An embodiment of the present invention provides an antenna device including an antenna part; and a dielectric formed on the antenna part; wherein the dielectric is formed to be thicker in a direction of directivity that the antenna part is to be made to have, than in another direction.
- An embodiment of the present invention provides a method of manufacturing an antenna device including an antenna part on which a dielectric material is molded, the method including the step of insert-molding the antenna part with the dielectric material, such that the dielectric material is thicker in a direction of directivity that the antenna part is to be made to have, than in another direction.
- An embodiment of the present invention provides a method of manufacturing an antenna device including an antenna part and a dielectric formed on the antenna part, the dielectric being formed to be thicker in a direction of directivity that the antenna part is to be made to have, than in another direction, the method including the step of one of attaching the dielectric to the antenna part; and insert-molding the antenna part and the dielectric.
- an antenna device that can improve directivity with a simple structure is provided.
- FIG. 1 is a perspective view of an antenna device according to a first embodiment of the present invention
- FIG. 2 is a cut-away side view of the antenna device according to the first embodiment of the present invention.
- FIG. 3 is a simulation model of the antenna device
- FIG. 4 indicates the directivity of the simulation model
- FIG. 5 is a perspective view of an antenna device according to a second embodiment of the present invention.
- FIG. 6 is a cut-away side view of the antenna device according to the second embodiment of the present invention.
- FIGS. 7A through 7E are diagrams for describing a manufacturing method of the antenna device
- FIGS. 8A , 8 B are diagrams for describing the manufacturing method of the antenna device.
- FIG. 9 is a cross-sectional view of a variation of a dielectric.
- FIG. 1 is a perspective view of a first embodiment according to the present invention
- FIG. 2 is a cut-away side view of the first embodiment.
- An antenna device 100 is a monopole antenna for UWB communication, and includes an antenna part 111 , a dielectric 112 , and a connector 113 .
- the antenna part 111 includes a conductive pattern 122 formed on a printed wiring board 121 in a predetermined pattern.
- the printed wiring board 121 includes dielectrics such as FR4 and ceramics, and the surface thereof is patterned with the conductive pattern 122 by etching, etc.
- the conductive pattern 122 includes an element pattern 131 , a transmission line 132 , and a ground pattern 133 .
- the element pattern 131 is a substantially rectangular-shaped conductive pattern formed on one side of the printed wiring board 121 .
- a power feeding point P 0 is formed on the edge of the element pattern 131 opposing the ground pattern 133 .
- Two sides of the element pattern 131 between which the power feeding point P 0 is positioned, are each tilted by an angle ⁇ with respect to an axis orthogonal to the side of the ground pattern 133 opposing the element pattern 131 .
- the angle ⁇ is a predetermined angle of, for example, substantially 63 degrees.
- the transmission line 132 is formed on the printed wiring board 121 , on the same side as the element pattern 131 .
- One end of the transmission line 132 is connected to the power feeding point P 0 , and the other end is extended to the edge part of the printed wiring board 121 .
- the transmission line 132 and the ground pattern 133 are opposed to each other with the printed wiring board 121 located therebetween, the transmission line 132 serving as a so-called microstrip line.
- the ground pattern 133 is formed on the other side of the printed wiring board 121 , contacting the power feeding point P 0 of the element pattern 131 .
- the element pattern 131 and the ground pattern 133 are opposed to each other with the printed wiring board 121 located therebetween, and are therefore not electrically coupled.
- the connector 113 includes a signal pin 141 , a sealed member 142 , and an insulating member 143 .
- the signal pin 141 is held by the sealed member 142 via the insulating member 143 .
- the signal pin 141 is soldered to the transmission line 132 at the edge part on one side of the printed wiring board 121 .
- the sealed member 142 is soldered to the ground pattern 133 at the edge part on the other side of the printed wiring board 121 .
- the dielectric 112 is fabricated by molding a dielectric material of relatively high dielectric constant ⁇ r such as ABS or MC nylon, into a substantially conical shape.
- the dielectric 112 is formed on the element pattern 131 of the antenna part 111 , so as to be thicker in a direction indicated by an arrow Z 1 (above the element pattern 131 ), than in a direction indicated by an arrow Z 2 (below the element pattern 131 ).
- the dielectric 112 can be formed by molding the highly dielectric material into the substantially conical shape, and then attaching the molded cone onto the antenna part 111 ; or by insert-molding the antenna part 111 with the highly dielectric material.
- the dielectric 112 has effects on antenna directivity as described below.
- FIG. 3 is a simulation model of the antenna device 100
- FIG. 4 indicates the directivity of the simulation model.
- the solid line expresses properties of 3 GHz, the dashed line 4 GHz, and the dash-dot line 5 GHz.
- the element pattern 131 is a conductive pattern whose sides are substantially 40 mm.
- FIG. 4 indicates simulation results obtained by using the simulation model shown in FIG. 3 .
- the gain in the Z 1 direction is substantially +7 dB, whereas the gain in a Z 2 direction opposite to the Z 1 direction is substantially +3 dB, which is less than half of that of the Z 1 direction.
- the gain in the Z 1 direction is greater than the gain in the Z 2 direction in any of 3 GHz, 4 GHz, and 5 GHz.
- the antenna directivity be in the Z 1 direction, which is the direction in which the dielectric 112 is formed.
- the dielectric 112 by laminating the dielectric 112 so as to be thicker in a direction of the intended antenna directivity than in another direction, it is possible to make the antenna directivity be in the direction corresponding to the thick part of the dielectric 112 . Therefore, directivity can be given to a nondirectional antenna.
- the dielectric 112 can be made thinner by increasing the dielectric constant, if the directivity is to be the same.
- FIG. 5 is a perspective view of a second embodiment according to the present invention
- FIG. 6 is a cut-away side view of the second embodiment.
- An antenna device 200 according to the second embodiment is a monopole antenna for UWB communication, similar to the first embodiment, and includes an antenna part 211 , a dielectric 212 , and a connector 213 .
- the antenna part 211 is formed by punching a sheet metal in press working.
- the antenna part 211 includes an element part 221 and a ground part 222 .
- the element part 221 has a substantially rectangular shape.
- a power feeding point P 0 is formed on the edge of the element part 221 opposing the ground part 222 .
- Two sides of the element part 221 , between which the power feeding point P 0 is positioned, are each tilted by an angle ⁇ .
- the angle ⁇ is a predetermined angle of, for example, substantially 63 degrees.
- the ground part 222 has a substantially rectangular shape, and is spaced apart from the element part 221 with a predetermined interval, so as to be insulated.
- the connector 213 can be realized by a compact coaxial connector called a UFL connector, and is arranged at the power feeding point P 0 of the element part 221 .
- a signal line 231 is soldered to the element part 221 , and a sealed part 232 is soldered to the ground part 222 .
- a coaxial cable 214 is to be connected to the connector 213 .
- the dielectric 212 is made of a dielectric material of relatively high dielectric constant ⁇ r such as ABS or MC nylon.
- the dielectric 212 is formed on the element part 221 of the antenna part 211 , so as to be thicker in a direction indicated by an arrow Z 1 .
- the second embodiment similar to the first embodiment, by laminating the dielectric 212 so as to be thicker in a direction of the intended antenna directivity than in another direction, it is possible to make the antenna directivity be in the direction corresponding to the thick part of the dielectric 212 . Therefore, directivity can be given to a nondirectional antenna.
- the antenna device 200 according to the second embodiment is formed by punching a metal sheet, and resin-molding the punched metal sheet. Therefore, the antenna device 200 can be manufactured at low cost.
- a method of manufacturing the antenna device 200 is described.
- FIGS. 7A through 7E , 8 A, 8 B are diagrams for describing the manufacturing method of the antenna device 200 .
- a planar metal sheet 311 shown in FIG. 7A is punched by using a punch die. Accordingly, as shown in FIG. 7B , multiple antenna parts 211 are formed, each including the element part 221 and the ground part 222 .
- the antenna parts 211 shown in FIG. 7B are separated into individual units as shown in FIG. 7C .
- positions of the element part 221 and the ground part 222 are determined by a frame part 321 , so as to be fixed at a predetermined physical relationship.
- the element part 221 and the ground part 222 are initially connected by the frame part 321 .
- Connection parts 322 between the frame part 321 and the element part 221 and the ground part 222 are in a half-cut status, so that the element part 221 and the ground part 222 can be easily cut off from the frame part 321 later.
- the connector 213 is arranged at a position between the element part 221 and the ground part 222 , and soldered thereto. Accordingly, the signal pin 231 of the connector 213 is soldered to the element part 221 , and the sealed part 232 of the connector 213 is soldered to the ground part 222 . Thus, the element part 221 and the ground part 222 are fixed at predetermined positions via the connector 231 .
- the frame part 321 is cut off from the element part 221 and the ground part 222 , thereby manufacturing the antenna part 211 with the connector 213 soldered thereto, as shown in FIG. 7E .
- the antenna part 211 to which the connector 213 is soldered is mounted inside a mold die 331 . Subsequently, fused, highly dielectric resin 333 is injected to the mold die 331 .
- resin is molded around the element part 221 and the ground part 222 of the antenna part 211 , thereby forming the dielectric 212 and an overcoat 215 .
- the antenna device 200 is manufactured.
- the connector 213 is mounted; however, a signal line of the coaxial cable 214 can be directly soldered to the element part 221 , or a ground line of the coaxial cable 214 can be directly soldered to the ground part 222 .
- the dielectric 112 , 212 having a consistent dielectric constant ⁇ r is laminated; however, dielectric materials having different dielectric constants can be sequentially laminated on the element pattern.
- FIG. 9 is a cross-sectional view of a variation of the dielectric 112 , 212 .
- plural layers of the dielectric 112 , 212 having different dielectric constants, satisfying ⁇ r 1 ⁇ r 2 . . . ⁇ rn, can be sequentially laminated on the antenna part 111 , 211 .
- a monopole type UWB antenna is applied; however, the present invention is not limited thereto.
- a dipole antenna can be applied.
- the present invention is applicable not only to a UWB antenna, but also to wide band antennas or narrow band antennas.
- the dielectric 112 , 212 can also be insert-molded to the antenna part 111 , 211 .
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Abstract
Description
- 1. Field of the Invention
- The present invention relates generally to antenna devices, and more particularly to a directional antenna device.
- 2. Description of the Related Art
- In recent years and continuing, wireless communication technology using UWB (ultra-wide band) is attracting attention, as radar positioning is possible and communications of a large transmission capacity can be achieved. In 2002, the FCC (Federal Communication Commission) of the US authorized usage of a frequency band of 3.1 GHz through 10.6 GHz.
- UWB is a communication method of communicating pulse signals in an ultra-wide band. Therefore, UWB requires an antenna having a structure with which signals can be transmitted and received in an ultra-wide band.
- There is a proposed antenna including a bottom board and a power feeding body, to be used in the frequency band of at least 3.1 GHz through 10.6 GHz, authorized by the FCC (Non-patent literature 1).
- Non-patent literature 1: An Omnidirectional and Low-VSWR Antenna for the FCC-Approved UWB Frequency Band, written and proposed by Takuya Taniguchi and Takehiko Kobayashi of Tokyo Denki University, at 2003 IEICE (The Institute of Electronics, Information and Communication Engineers) General Conference, B-1-133, on Mar. 22, 2003, at Tohoku University, Kawauchi Campus, classroom B201
- However, this type of UWB antenna is nondirectional, and therefore, communication efficiencies are degraded when directivity is required.
- The present invention provides an antenna device in which one or more of the above-described disadvantages is eliminated.
- A preferred embodiment of the present invention provides an antenna device that can improve directivity with a simple structure.
- An embodiment of the present invention provides an antenna device including an antenna part; and a dielectric formed on the antenna part; wherein the dielectric is formed to be thicker in a direction of directivity that the antenna part is to be made to have, than in another direction.
- An embodiment of the present invention provides a method of manufacturing an antenna device including an antenna part on which a dielectric material is molded, the method including the step of insert-molding the antenna part with the dielectric material, such that the dielectric material is thicker in a direction of directivity that the antenna part is to be made to have, than in another direction.
- An embodiment of the present invention provides a method of manufacturing an antenna device including an antenna part and a dielectric formed on the antenna part, the dielectric being formed to be thicker in a direction of directivity that the antenna part is to be made to have, than in another direction, the method including the step of one of attaching the dielectric to the antenna part; and insert-molding the antenna part and the dielectric.
- According to one embodiment of the present invention, an antenna device that can improve directivity with a simple structure is provided.
- Other objects, features and advantages of the present invention will become more apparent from the following detailed description when read in conjunction with the accompanying drawings, in which:
-
FIG. 1 is a perspective view of an antenna device according to a first embodiment of the present invention; -
FIG. 2 is a cut-away side view of the antenna device according to the first embodiment of the present invention; -
FIG. 3 is a simulation model of the antenna device; -
FIG. 4 indicates the directivity of the simulation model; -
FIG. 5 is a perspective view of an antenna device according to a second embodiment of the present invention; -
FIG. 6 is a cut-away side view of the antenna device according to the second embodiment of the present invention; -
FIGS. 7A through 7E are diagrams for describing a manufacturing method of the antenna device; -
FIGS. 8A , 8B are diagrams for describing the manufacturing method of the antenna device; and -
FIG. 9 is a cross-sectional view of a variation of a dielectric. - A description is given, with reference to the accompanying drawings, of an embodiment of the present invention.
-
FIG. 1 is a perspective view of a first embodiment according to the present invention, andFIG. 2 is a cut-away side view of the first embodiment. - An
antenna device 100 according to the first embodiment is a monopole antenna for UWB communication, and includes anantenna part 111, a dielectric 112, and aconnector 113. Theantenna part 111 includes aconductive pattern 122 formed on a printedwiring board 121 in a predetermined pattern. - The printed
wiring board 121 includes dielectrics such as FR4 and ceramics, and the surface thereof is patterned with theconductive pattern 122 by etching, etc. Theconductive pattern 122 includes anelement pattern 131, atransmission line 132, and aground pattern 133. - The
element pattern 131 is a substantially rectangular-shaped conductive pattern formed on one side of the printedwiring board 121. A power feeding point P0 is formed on the edge of theelement pattern 131 opposing theground pattern 133. Two sides of theelement pattern 131, between which the power feeding point P0 is positioned, are each tilted by an angle θ with respect to an axis orthogonal to the side of theground pattern 133 opposing theelement pattern 131. The angle θ is a predetermined angle of, for example, substantially 63 degrees. - The
transmission line 132 is formed on the printedwiring board 121, on the same side as theelement pattern 131. One end of thetransmission line 132 is connected to the power feeding point P0, and the other end is extended to the edge part of the printedwiring board 121. Thetransmission line 132 and theground pattern 133 are opposed to each other with the printedwiring board 121 located therebetween, thetransmission line 132 serving as a so-called microstrip line. Theground pattern 133 is formed on the other side of the printedwiring board 121, contacting the power feeding point P0 of theelement pattern 131. Theelement pattern 131 and theground pattern 133 are opposed to each other with the printedwiring board 121 located therebetween, and are therefore not electrically coupled. - The
connector 113 includes asignal pin 141, a sealedmember 142, and aninsulating member 143. Thesignal pin 141 is held by the sealedmember 142 via theinsulating member 143. Thesignal pin 141 is soldered to thetransmission line 132 at the edge part on one side of the printedwiring board 121. The sealedmember 142 is soldered to theground pattern 133 at the edge part on the other side of the printedwiring board 121. - The dielectric 112 is fabricated by molding a dielectric material of relatively high dielectric constant εr such as ABS or MC nylon, into a substantially conical shape. The dielectric 112 is formed on the
element pattern 131 of theantenna part 111, so as to be thicker in a direction indicated by an arrow Z1 (above the element pattern 131), than in a direction indicated by an arrow Z2 (below the element pattern 131). The dielectric 112 can be formed by molding the highly dielectric material into the substantially conical shape, and then attaching the molded cone onto theantenna part 111; or by insert-molding theantenna part 111 with the highly dielectric material. - The directions indicated by the arrows Z1, Z2 are orthogonal to the
element pattern 131 of theantenna part 111, i.e., orthogonal to the printedwiring board 121. Further, the two directions indicated by the arrows Z1, Z2 are opposite to each other. It is noted that ABS has a dielectric constant of εr=3 through 7, and MC nylon has a dielectric constant of εr=2.7 through 4.7. - The dielectric 112 has effects on antenna directivity as described below.
-
FIG. 3 is a simulation model of theantenna device 100, andFIG. 4 indicates the directivity of the simulation model. InFIG. 4 , the solid line expresses properties of 3 GHz, the dashed line 4 GHz, and the dash-dot line 5 GHz. - In the simulation model, the
element pattern 131 is a conductive pattern whose sides are substantially 40 mm. The dielectric 112 is formed into a conical shape having a diameter of substantially 100 mm and a height of substantially 100 mm, in a direction indicated by an arrow Z1 orthogonal to theelement pattern 131, centered around the center of theelement pattern 131, with a dielectric constant of substantially εr=10. -
FIG. 4 indicates simulation results obtained by using the simulation model shown inFIG. 3 . - By forming the dielectric 112 in the conical shape on the
element pattern 131 in the direction indicated by the arrow Z1 as shown inFIG. 3 , the gain in the Z1 direction is substantially +7 dB, whereas the gain in a Z2 direction opposite to the Z1 direction is substantially +3 dB, which is less than half of that of the Z1 direction. As shown inFIG. 4 , the gain in the Z1 direction is greater than the gain in the Z2 direction in any of 3 GHz, 4 GHz, and 5 GHz. - Accordingly, it is possible to make the antenna directivity be in the Z1 direction, which is the direction in which the dielectric 112 is formed.
- According to the first embodiment, by laminating the dielectric 112 so as to be thicker in a direction of the intended antenna directivity than in another direction, it is possible to make the antenna directivity be in the direction corresponding to the thick part of the dielectric 112. Therefore, directivity can be given to a nondirectional antenna.
- The dielectric 112 can be made thinner by increasing the dielectric constant, if the directivity is to be the same.
-
FIG. 5 is a perspective view of a second embodiment according to the present invention, andFIG. 6 is a cut-away side view of the second embodiment. - An
antenna device 200 according to the second embodiment is a monopole antenna for UWB communication, similar to the first embodiment, and includes anantenna part 211, a dielectric 212, and aconnector 213. Theantenna part 211 is formed by punching a sheet metal in press working. - The
antenna part 211 includes anelement part 221 and aground part 222. - The
element part 221 has a substantially rectangular shape. A power feeding point P0 is formed on the edge of theelement part 221 opposing theground part 222. Two sides of theelement part 221, between which the power feeding point P0 is positioned, are each tilted by an angle θ. The angle θ is a predetermined angle of, for example, substantially 63 degrees. - The
ground part 222 has a substantially rectangular shape, and is spaced apart from theelement part 221 with a predetermined interval, so as to be insulated. - The
connector 213 can be realized by a compact coaxial connector called a UFL connector, and is arranged at the power feeding point P0 of theelement part 221. Asignal line 231 is soldered to theelement part 221, and asealed part 232 is soldered to theground part 222. Acoaxial cable 214 is to be connected to theconnector 213. - Similar to the first embodiment, the dielectric 212 is made of a dielectric material of relatively high dielectric constant εr such as ABS or MC nylon. The dielectric 212 is formed on the
element part 221 of theantenna part 211, so as to be thicker in a direction indicated by an arrow Z1. - According to the second embodiment, similar to the first embodiment, by laminating the dielectric 212 so as to be thicker in a direction of the intended antenna directivity than in another direction, it is possible to make the antenna directivity be in the direction corresponding to the thick part of the dielectric 212. Therefore, directivity can be given to a nondirectional antenna.
- Further, the
antenna device 200 according to the second embodiment is formed by punching a metal sheet, and resin-molding the punched metal sheet. Therefore, theantenna device 200 can be manufactured at low cost. - A method of manufacturing the
antenna device 200 is described. -
FIGS. 7A through 7E , 8A, 8B are diagrams for describing the manufacturing method of theantenna device 200. - A
planar metal sheet 311 shown inFIG. 7A is punched by using a punch die. Accordingly, as shown inFIG. 7B ,multiple antenna parts 211 are formed, each including theelement part 221 and theground part 222. Theantenna parts 211 shown inFIG. 7B are separated into individual units as shown inFIG. 7C . As shown inFIG. 7C , positions of theelement part 221 and theground part 222 are determined by aframe part 321, so as to be fixed at a predetermined physical relationship. Theelement part 221 and theground part 222 are initially connected by theframe part 321.Connection parts 322 between theframe part 321 and theelement part 221 and theground part 222 are in a half-cut status, so that theelement part 221 and theground part 222 can be easily cut off from theframe part 321 later. - Next, as shown in
FIG. 7D , theconnector 213 is arranged at a position between theelement part 221 and theground part 222, and soldered thereto. Accordingly, thesignal pin 231 of theconnector 213 is soldered to theelement part 221, and the sealedpart 232 of theconnector 213 is soldered to theground part 222. Thus, theelement part 221 and theground part 222 are fixed at predetermined positions via theconnector 231. - Next, the
frame part 321 is cut off from theelement part 221 and theground part 222, thereby manufacturing theantenna part 211 with theconnector 213 soldered thereto, as shown inFIG. 7E . - Next, as shown in
FIG. 8A , theantenna part 211 to which theconnector 213 is soldered is mounted inside amold die 331. Subsequently, fused, highlydielectric resin 333 is injected to the mold die 331. - By performing resin-molding as shown in
FIG. 8A , resin is molded around theelement part 221 and theground part 222 of theantenna part 211, thereby forming the dielectric 212 and anovercoat 215. - Accordingly, the
antenna device 200 is manufactured. - In the present embodiment, the
connector 213 is mounted; however, a signal line of thecoaxial cable 214 can be directly soldered to theelement part 221, or a ground line of thecoaxial cable 214 can be directly soldered to theground part 222. - [Variations]
- In the above embodiments, the dielectric 112, 212 having a consistent dielectric constant εr is laminated; however, dielectric materials having different dielectric constants can be sequentially laminated on the element pattern.
-
FIG. 9 is a cross-sectional view of a variation of the dielectric 112, 212. - As shown in
FIG. 9 , plural layers of the dielectric 112, 212 having different dielectric constants, satisfying εr1<εr2 . . . <εrn, can be sequentially laminated on theantenna part - Further, in the above embodiments, a monopole type UWB antenna is applied; however, the present invention is not limited thereto. A dipole antenna can be applied. Moreover, the present invention is applicable not only to a UWB antenna, but also to wide band antennas or narrow band antennas.
- It is possible to separately form the dielectric 112, 212, and then attach the dielectric 112, 212 to the element pattern of the
antenna part antenna part - The present invention is not limited to the specifically disclosed embodiment, and variations and modifications may be made without departing from the scope of the present invention.
- The present application is based on Japanese Priority Patent Application No. 2006-091605, filed on Mar. 29, 2006, the entire contents of which are hereby incorporated by reference.
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2006-091605 | 2006-03-29 | ||
JP2006091605A JP2007267217A (en) | 2006-03-29 | 2006-03-29 | Antenna system |
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US20070229363A1 true US20070229363A1 (en) | 2007-10-04 |
US7382331B2 US7382331B2 (en) | 2008-06-03 |
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US11/585,902 Expired - Fee Related US7382331B2 (en) | 2006-03-29 | 2006-10-25 | Antenna device |
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JP2000174543A (en) * | 1998-12-01 | 2000-06-23 | Nippon Signal Co Ltd:The | Antenna system and automatic train controller |
JP4523223B2 (en) * | 2002-04-26 | 2010-08-11 | 株式会社日立製作所 | Radar sensor |
JP2005110123A (en) * | 2003-10-01 | 2005-04-21 | Alps Electric Co Ltd | Pattern antenna |
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2006
- 2006-03-29 JP JP2006091605A patent/JP2007267217A/en active Pending
- 2006-10-25 US US11/585,902 patent/US7382331B2/en not_active Expired - Fee Related
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US4755820A (en) * | 1985-08-08 | 1988-07-05 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Antenna device |
US6246369B1 (en) * | 1999-09-14 | 2001-06-12 | Navsys Corporation | Miniature phased array antenna system |
US6713162B2 (en) * | 2000-05-31 | 2004-03-30 | Tdk Corporation | Electronic parts |
US6946995B2 (en) * | 2002-11-29 | 2005-09-20 | Electronics And Telecommunications Research Institute | Microstrip patch antenna and array antenna using superstrate |
Cited By (9)
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WO2009068774A2 (en) * | 2007-11-08 | 2009-06-04 | France Telecom | Electromagnetic antenna reconfigurable by electrowetting |
WO2009068774A3 (en) * | 2007-11-08 | 2009-08-06 | France Telecom | Electromagnetic antenna reconfigurable by electrowetting |
US8373605B2 (en) | 2007-11-08 | 2013-02-12 | France Telecom | Electromagnetic antenna reconfigurable by electrowetting |
US20110018780A1 (en) * | 2009-07-21 | 2011-01-27 | Qualcomm Incoporated | Antenna Array For Multiple In Multiple Out (MIMO) Communication Systems |
US20110057859A1 (en) * | 2009-09-04 | 2011-03-10 | Rho Sungjung | Antenna assembly and portable terminal having the same |
US8525737B2 (en) * | 2009-09-04 | 2013-09-03 | Lg Electronics Inc. | Antenna assembly and portable terminal having the same |
WO2016048152A1 (en) * | 2014-09-24 | 2016-03-31 | The Antenna Company International N.V. | Blade antenna and wireless local area network comprising a blade antenna |
US10468778B2 (en) | 2014-09-24 | 2019-11-05 | The Antenna Company International N.V. | Blade antenna and wireless local area network comprising a blade antenna |
US11201396B2 (en) | 2018-12-07 | 2021-12-14 | Samsung Electronics Co., Ltd. | Antenna module and electronic device comprising the same |
Also Published As
Publication number | Publication date |
---|---|
US7382331B2 (en) | 2008-06-03 |
JP2007267217A (en) | 2007-10-11 |
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